按钮使用可视格式语言在动态添加中重复问题

Question

我使用下面的函数在下一行添加与Fred和No相同的按钮，但在同一个地方没有相同的按钮大小和文本。

- (IBAction)addAnotherBranchField:(id)sender
{
    NSLog(@"Add Another Branch");
    UIView *superview = self;
    _buttons = [NSMutableArray array];
    self.translatesAutoresizingMaskIntoConstraints = NO;
    self.backgroundColor = [UIColor clearColor];

    _verticalButtonConstraints = [NSMutableArray array];

    NSString* previousAnswer = [_datasource valueForField:_field.guid branchIndex:0];
    id buttonForLoadedAnswer = nil;

    for (FormListOption* option in _field.options) {

        UIButton* button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
        button.translatesAutoresizingMaskIntoConstraints = NO;

        //Add a little padding around the text - Using edge insets does not play well with the autolayout so do it with a space instead
        [button setTitle:[NSString stringWithFormat:@" %@ ",option.text] forState:UIControlStateNormal];
        [button setTitleColor:[UIColor whiteColor] forState:UIControlStateSelected];
        [_buttons addObject:button];
        [superview addSubview: button];

    if ([option.text isEqualToString:previousAnswer]) {
        buttonForLoadedAnswer = button;
     }
    }

    paddingCounter = paddingCounter + 100;
    UIButton *addButton = [[UIButton alloc] initWithFrame:CGRectMake(200, paddingCounter, 32, 32)];
   [addButton setImage:[UIImage imageNamed:@"nav_newanswers.png"] forState:UIControlStateNormal];
   [addButton addTarget:self action:@selector(addAnotherBranchField:) forControlEvents:UIControlEventTouchUpInside];
   [superview addSubview:addButton];
   [superview bringSubviewToFront:addButton];


   //Add the constraints
NSMutableDictionary* views = [NSMutableDictionary dictionary];
NSMutableString* visualLayout = [NSMutableString stringWithString:@"H:|-(5)-"];
for (NSInteger i=0; i < [_buttons count]; i++) {
    NSString* name = [NSString stringWithFormat:@"button_%d", i];
    [views setValue:[_buttons objectAtIndex:i] forKey:name];
    [visualLayout appendFormat:@"[%@(>=80)]-", name];
}

[visualLayout appendString:@"(>=10)-|"];
[superview addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:visualLayout
                                                                  options:NSLayoutFormatAlignAllBottom
                                                                  metrics:nil
                                                                    views:views]];
}

- (void)updateVerticalConstrainsAgain:(UIView*)expandedView padding:(float)padding 
{

[self removeConstraints:_verticalButtonConstraints];
[_verticalButtonConstraints removeAllObjects];

NSString* visualFormat = [NSString stringWithFormat: @"V:|[button]-(5)-%@|", expandedView ? [NSString stringWithFormat:@"[expanded]-(20)-"] : @""];

if (padding != 0 && expandedView == nil)
{
    visualFormat = [NSString stringWithFormat:@"V:|[button(button)]-(%f)-|",padding];
}

for (UIView* button in _buttons) {

    NSMutableDictionary* views = [NSMutableDictionary dictionaryWithObject:button forKey:@"button"];
    if (expandedView) {
        [views setObject:button forKey:@"expanded"];
    }

    NSArray* constraints = [NSLayoutConstraint constraintsWithVisualFormat:visualFormat
                                                                   options:0
                                                                   metrics:nil
                                                                     views:views];
    [self addConstraints:constraints];
    [_verticalButtonConstraints addObjectsFromArray:constraints];
}
}

请解释我，我错了。花一整天时间摆脱困境。